Talks over a new Spurs contract have dragged and the Belgium international has been linked with Manchester City, Chelsea and Real Madrid amid reports that his current deal has a £25 million release clause that can be activated next summer.

Centre-back Alderweireld did not travel with the Spurs squad to Juventus despite saying he was ready after three months out with a hamstring injury, but manager Mauricio Pochettino said the Londoners were protecting him.

United have also been linked with Leicester's Harry Maguire and Raphael Varane of Real Madrid.

Toby Alderweireld's future at Tottenham appears to be up in the air.

Chinese Super League side want Dembele deal

Tottenham midfielder Mousa Dembele has become the latest Premier League star to be targeted by a Chinese Super League club, according to the Sun.

It reports that Beijing Sinobo Guoan are "prepared to pay Dembele £160,000-a-week -- at least double his current wages at Spurs" to tempt him, adding that sources in China believe a deal could be struck "before the Chinese transfer window closes on Feb. 28."

Belgium international Dembele, linked with AC Milan during the January window, has been in impressive form but has only 18 months left on his current Tottenham deal.

However, the Sun says Beijing Sinobo Guoan could end up frustrated, with Spurs sources "insisting he is not for sale."

Alisson set to become more expensive

Liverpool continue to be linked with Roma goalkeeper Alisson Becker -- but signing him may soon be a vastly more costly prospect, TalkSPORT reports.

It adds that Roma want to increase the Brazil international's release clause to £80m "to ward off interest from Liverpool, Paris Saint-Germain and Real Madrid."

Liverpool continue to monitor 25-year-old Alisson, with Jurgen Klopp reportedly remaining unconvinced by either Simon Mignolet or Loris Karius, while Juventus will join the race if Gianluigi Buffon ends his playing days.

But the report says Roma "are working on a new deal for Alisson that would include a hefty release clause but also a significant pay rise to keep him happy."

Tap-ins

- Manchester City could be about to offer more than £22m for Sporting Lisbon striker Rafael Leao, according to the Sun.

It reports that Leao, 18, is also interesting Chelsea after scoring 12 goals in 19 games and says Sporting "have already rejected a number of approaches from interested parties."

- Goalkeeper Martin Dubravka made quite some debut for Newcastle against Manchester United, and the Mirror says they already want to make his move to St James' Park permanent.

Dubravka is on loan from Sparta Prague, but Newcastle can make that full time if they pay £4m in the summer -- which the report adds "seems likely if they avoid relegation."